package com.sunny.ynhz.utils;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.util.Base64;

public class PictureUtil {

	/**
	 * 把bitmap转换成String
	 * 
	 * @param filePath
	 * @return
	 */
	public static String bitmapToString(String filePath) {

		Bitmap bm = getSmallBitmap(filePath);

		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		bm.compress(Bitmap.CompressFormat.JPEG, 40, baos);
		byte[] b = baos.toByteArray();

		return Base64.encodeToString(b, Base64.DEFAULT);

	}

//	public void saveFile(Bitmap bm, String fileName) throws IOException {
//		String path = getSDPath() +"/revoeye/";
//		File dirFile = new File(path);
//		if(!dirFile.exists()){
//			dirFile.mkdir();
//		}
//		File myCaptureFile = new File(path + fileName);
//		BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(myCaptureFile));
//		bm.compress(Bitmap.CompressFormat.JPEG, 80, bos);
//		bos.flush();
//		bos.close();
//	}

	/**
	 * 压缩图片（质量压缩）
	 * @param bitmap
	 */
	public static File compressImage(Bitmap bitmap,String fileName) {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);//质量压缩方法，这里100表示不压缩，把压缩后的数据存放到baos中
		int options = 100;
		while (baos.toByteArray().length / 1024 > 500) {  //循环判断如果压缩后图片是否大于500kb,大于继续压缩
			baos.reset();//重置baos即清空baos
			options -= 10;//每次都减少10
			bitmap.compress(Bitmap.CompressFormat.JPEG, options, baos);//这里压缩options%，把压缩后的数据存放到baos中
			long length = baos.toByteArray().length;
		}
//		SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
//		Date date = new Date(System.currentTimeMillis());
//		String filename = format.format(date);
		File file = new File(Environment.getExternalStorageDirectory(),fileName+".png");
		try {
			FileOutputStream fos = new FileOutputStream(file);
			try {
				fos.write(baos.toByteArray());
				fos.flush();
				fos.close();
			} catch (IOException e) {

				e.printStackTrace();
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		recycleBitmap(bitmap);
		return file;
	}

	public static void recycleBitmap(Bitmap... bitmaps) {
		if (bitmaps==null) {
			return;
		}
		for (Bitmap bm : bitmaps) {
			if (null != bm && !bm.isRecycled()) {
				bm.recycle();
			}
		}
	}

	/**
	 * 根据路径获得突破并压缩返回bitmap用于显示
	 * 
	 * @param filePath
	 * @return
	 */
	public static Bitmap getSmallBitmap(String filePath) {
		final BitmapFactory.Options options = new BitmapFactory.Options();
		options.inJustDecodeBounds = true;
		BitmapFactory.decodeFile(filePath, options);

		// Calculate inSampleSize
		options.inSampleSize = calculateInSampleSize(options, 480, 800);

		// Decode bitmap with inSampleSize set
		options.inJustDecodeBounds = false;

		return BitmapFactory.decodeFile(filePath, options);
	}

	/**
	 * 计算图片的缩放值
	 * 
	 * @param options
	 * @param reqWidth
	 * @param reqHeight
	 * @return
	 */
	public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
		// Raw height and width of image
		final int height = options.outHeight;
		final int width = options.outWidth;
		int inSampleSize = 1;

		if (height > reqHeight || width > reqWidth) {

			// Calculate ratios of height and width to requested height and
			// width
			final int heightRatio = Math.round((float) height / (float) reqHeight);
			final int widthRatio = Math.round((float) width / (float) reqWidth);

			// Choose the smallest ratio as inSampleSize value, this will
			// guarantee
			// a final image with both dimensions larger than or equal to the
			// requested height and width.
			inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
		}

		return inSampleSize;
	}
	
	
	/**
	 * 根据路径删除图片
	 * 
	 * @param path
	 */
	public static void deleteTempFile(String path) {
		File file = new File(path);
		if (file.exists()) {
			file.delete();
		}
	}

	/**
	 * 添加到图库
	 */
	public static void galleryAddPic(Context context, String path) {
		Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
		File f = new File(path);
		Uri contentUri = Uri.fromFile(f);
		mediaScanIntent.setData(contentUri);
		context.sendBroadcast(mediaScanIntent);
	}

	/**
	 * 获取保存图片的目录
	 * 
	 * @return
	 */
	public static File getAlbumDir() {
		File dir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), getAlbumName());
		if (!dir.exists()) {
			dir.mkdirs();
		}
		return dir;
	}

	/**
	 * 获取保存 隐患检查的图片文件夹名称
	 * 
	 * @return
	 */
	public static String getAlbumName() {
		return "sheguantong";
	}
}
